1: (7 12 15)

(0 19 3)(1 6 4)(2 13 11)(5 14 8)(7 12 15)(9 17 10)(16 20 18)

2: (2 13 11)

(0 19 3)(1 6 4)(2)(5 14 8)(7 12 15)(9 17 10)(11)(13)(16 20 18)

3: (7 12 15)

(0 19 3)(1 6 4)(2)(5 14 8)(7)(9 17 10)(11)(12)(13)(15)(16 20 18)

4: (5 14 8)

(0 19 3)(1 6 4)(2)(5)(7)(8)(9 17 10)(11)(12)(13)(14)(15)(16 20 18)